The operator already runs it, so this is the one provider that costs nothing to adopt: no key,
no card, no third party, and no new container. It aggregates several engines and returns them
merged, and its /api/search reply is already the shape everything downstream expects — title,
url, snippet, with content as a fallback for the roughly one result in six that has no snippet.
It is also now the only provider whose response has been read from a live service rather than
from documentation, which is why it is the default.